Miranda Lambert and Blake Shelton speak to the audience after receiving the CMA Award for Song of the Year during the 46th annual CMA awards at the Bridgestone Arena on November 1, 2012 in Nashville, Tennessee. Frederick Breedon/FilmMagic

"I lost my brother in a car wreck when I was 14-years-old, and later in life when I decided I wanted to be a country singer, my dad always told me, 'Son, you should write a song about your brother,'" Shelton, 36, told the audience as Lambert, 28, stood by his side. "I lost my dad in January, and it's so amazing to me that tonight even after he's gone, he's still right."

Fighting back tears, Lambert then addressed the crowd. "Thank you, Blake, for allowing me to sing this beautiful song and write it with you," the Texas native said. "Thank you CMA and all of our peers for voting for us. It's really emotional. We love y'all."